Surge Protective Devices
STC-SLAC Series
Safety Information
Important Information
Read these instructions carefully and look at the equipment to become
familiar with the device before trying to install, operate, service or maintain it.
The following special messages may appear throughout this bulletin or on the
equipment to warn of potential hazards or to call attention to information that
clarifies or simplifies a procedure.
The addition of either symbol to a “Danger” or “Warning” safety label
indicates that an electrical hazard exists which will result in personal
injury if the instructions are not followed.
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that follow this
symbol to avoid possible injury or death.
DANGER
DANGER indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
WARNING
WARNING indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION
CAUTION indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
NOTICE
NOTICE is used to address practices not related to physical injury. The safety
alert symbol shall not be used with this signal word.
Please Note
Electrical equipment should be installed, operated, serviced, and maintained only
by qualified personnel. No responsibility is assumed by Appleton Grp LLC d/b/a
Appleton Group for any consequences arising out of the use of this material.
A qualified person is one who has skills and knowledge related to the
construction, installation, and operation of electrical equipment and has received
safety training to recognize and avoid the hazards involved.
Page: 1
STCSLAC12036
Introduction
The STCSLAC12036 surge suppressor is specically designed for electronic instruments used by the water/
wastewater industries. It combines hybrid AC power protection and signal line protection in a NEMA-4X
polycarbonate enclosure.
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E,
NOM-029-STPS or CSA Z462.
• This equipment must only be installed and serviced by qualied electrical personnel.
• Turn o all power supplying this equipment before working on or inside equipment.
• Always use a properly rated voltage sensing device to conrm power is o.
• Replace all devices, doors and covers before turning on power to this equipment.
• This equipment must be eectively grounded per all applicable codes. Use an equipment-grounding conductor to
connect this equipment to the power system ground.
• Conrm that the Surge Protective Device voltage rating on the module or nameplate label is not less than the
operating voltage.
• On DC signal line protection do not apply more than 150mA
• On AC line protection do not apply more than 15 Amps of continuous current.
Failure to follow these instructions will result in death or serious injury.
WARNING: This product can expose you to chemicals including DINP, which is known to the State of
California to cause cancer, and DIDP which is known to the State of California to cause birth defects or other
reproductive harm. For more information go to: www.P65Warnings.ca.gov.
NOTICE
LOSS OF SURGE SUPPRESSION
• Make certain that Surge Protective Device is disconnected from the circuit it is protecting before conducting high
potential insulation testing.
Failure to follow these instructions can result in equipment damage.
DANGER
STCSLAC12036
Page: 2
Installation
1. Turn off all power supplying this equipment before working on or inside equipment.
2. Conrm that the unit has the same voltage rating and conguration as the power system voltage and
power system voltage to which it will be connected.
For AC Power Connections:
a. Connect AC Power as Marked on Case using #14 - #12 AWG wire (L, N, G). Torque to
12 lb-in (1.35 N-m).
b. Keep 120 VAC Power feed separate from Low Voltage signal feed.
For Signal Line Connections:
a. Connect GND Terminal to Local Ground using #12 AWG wire minimum. Torque to 12 lb-in (1.35 N-m).
b. L1 and L2 – Connect for Signal Pair #1.
c. L3 and L4 – Connect for Signal Pair #2.
d. Terminals accept #24 - #14 AWG wire, torque to 3.47 lb-in (0.4 N-m).
3. Replace the barrier, cover/door and/or trim to the equipment.
4. Equipment may be re-energized after all the above steps are complete.
Figure 1: STCSLAC12036 Power Flow
(FIELD) SIDE
SIGNAL
IN OUT
IN OUT
POWER FLOW
(EQUIPMENT) SIDE
SIGNAL
(FIELD) SIDE
120 VAC POWER
(EQUIPMENT) SIDE
120 VAC POWER
Upstream or
Line Side
Equipment
you want to
protect goes
on this side.
The STCSLAC12036 is a directional surge protector. Connection must
flow “in” the Unprotected (Field) Side, through the SPD, and “out” to the
Protected (Equipment) Side.
Page: 3
STCSLAC12036
Dimensions (in. / mm.)
Enclosure Dimensions (in. / mm.)
Enclosure Type H W D
NEMA 4X
Polymeric (Standard)
J
7.0
(178.0)
7.0
(178.0)
3.0
(76.0)
STCSLAC12036
Page: 4
General Technical Specifications
AC Power Protection
Operating Voltage 120 VAC, 47-63 Hz
Clamping Voltage Normal Mode (L-N)
Common Mode
(L-G) (N-G)
IEEE C62.41.2 Cat A Ringwave (6kV / 200A) 172 V 280 V
IEEE C62.41.2 Cat B Ringwave (6kV / 500A) 205 V 280 V
IEEE C62.41.2 Cat B Combo Wave (6kV / 3kA) 330 V 360 V
Maximum Operating Current 15 A
Peak Surge Current 39 kA (8x20 µs)
SPD Technology MOV/Inductor/Capacitor
EMI Attenuation >40dB (100kHz - 100MHz)
Signal Line Protection
Operating Voltage 0-36 VDC
Maximum Operating Current 150 mA (0.15 A)
Peak Surge Current 10 kA (8x20 µs)
SPD Technology GDT/PTC/SAD
Series Resistance 5 Ohm (Typical)
Page: 5
STCSLAC12036
Technical Support
Website: www.solahd.com
Technical Support E-Mail: solahd.technicalservices@emerson.com
Toll-Free: (800) 377-4384
USA: (847) 268-6651
Warranty
Please see the “Terms & Conditions of Sale” document.
While every precaution has been taken to ensure accuracy and completeness in this manual, Appleton Grp LLC d/b/a Appleton Group
assumes no responsibility, and disclaims all liability for damages resulting from use of this information or for any errors or omissions.
STC-SLAC Series
A272-340 Rev. 0 12/2020
The Emerson logo is a trademark and service mark of Emerson Electric Co.
Appleton Grp LLC d/b/a Appleton Group. SolaHD is a registered trademark of Appleton Grp LLC.
All other marks are the property of their respective owners. © 2020 Emerson Electric Co. All rights reserved.
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